Plow



Sept 1945. I c. G. STRANDLUND 2,334,405

PLOW

Filed Aug, so, 1943 4 sheets-sheet 1 p 1945- c. G. STRANDLUND PLOW Filed Aug.- so, 1943 4 Sheets-Sheet 2 INVENTOR. CA L G.STR DLUND BY w? ATTOR EYS P 1945- c. G. STRANDLUND 2,384,406

PLOW

Filed Aug. 30, 1943 I 4 Sheets-Sheet 3 INVENTOR. G. STRANDLUND ATTORNEYS IN V EN TOR.

Patented Sept. 4, 1945 UNITED. STATES can G. stranamnmiiiolme, m.,;asa gtor a neat & Company; Moline, 111,, a corporationofIllinois Application August- 30, 1943, Serial Names 15 Claims. crew- 1031?- The present invention relates generally to plows and more particularly to disk plowsl I r l 1 The object and generalnature of the present invention is the provision-oi a new and improved disk piow in which the rear end construction is materially simplified and in which'the cost of manufacture, as compared with prior plows of comparable size, is materially reduced. More particularly, it is a feature of this invention to provide a new and improved rear end construction for disk plows in which only a single rear'c'rank axle is required but in which the amountof lead and inclination of the rear furrow wheel, required to hold the rear end in the proper; position, is provided, together with all necessary adjustments. Heretofore, plows of this type have generally been constructed with two separate crank axles, one for the rear furrow wheel and one for the land wheel. Another feature of the present invention is the provision of new and improved means for adjusting the position of the crank axle, particularly in connection with a traction'driven power lift clutch. i

These and other objects and advantages of the present invention willbe apparent to those skilled in the art after a consideration of the following detailed description, taken in conjunction with the accompanying drawings. j y

ing the plow in its operating or lowered position.

Figure 3 is a view similar to Figure l but showing a modified form of the present invention.

Figure 4 is a plan view of the rear end of the plow shown in Figure 3.

Figure 5 is a rear view of the plow shown in Figure 3.

Figure- 6 is a section taken generally along the line 66 of Figure 4. Referring now to the drawings, more particularly to Figures 1 and 2, the frame orsupport-of the plow is indicated in its entirety by the reference numeral l and includes a beam construction comprising a pair of angle members land 3 (Figure 2) which are fixed together, as by bolts v4, and which have vertical flanges spacedapart a distance sufficient to receive therebetween'a plurality of disk standards 6" on the lower ends of Figure 2 isa view similar to Figure 1 but showed by.bearingxconstructions 8 of any suitable design. "Each of'the standardsifi is of generally L-shapedrformation, which provides a forward extension: suitably apertured to receive a pair of the-bolts '4 :whereby: each standard is rigidly seculedtd the frame or beam l. c

The rear end construction of the plow is indicated .in its "entirety by the: reference numeral l0 and includes a one piececrank axle II which is preferably formed by bending a bar of round stock into the desired shape. The rear crank axle H includes two crank sections l2 and I3 which are disposed in {planes lying: at an angle to one another;and 'an'intermediate or shaft section M. The latter section is connected with the rear end "or theframe or beam I for rocking motion relative'thereto about a'fixed axis. To this end, a plate-member l5 havinga horizontal section l6 and a downwardly extending'section l1, is bolted, as-at I8,-'to"the rear ends of the beam angles 2 and}; Preferablm the plate member I5 is pivoted on one of the-boltsfwhile' the other bolts are received inarcuate' slots whereby, by loosening'the bolts; the'{horizantal angle between the plate member l5'and the'frame l'may be ad- .iusted for hard, sort, andmedium soil conditions. This adjustment is similar to that shown in my-prior UnitedStates Patent No. 1,944,674, issued January 23, 1934, and "hence need not be described in detailhere; I'he-rear downwardly 'benflseCtion l1 of" the plate member l5 rests directly "on the intermediate portion 14 of the crank axle l I andis held'in position by a pair of'generally I. Jj-,shaped straps 2i and 22 bolted to the section I1; in conjunction with a collar 24 on the left side of the; crank axle, suitably fixed thereto, andjan; arm 25 fixed to the right side of theflcrank faxle'fThe uppper end (not shown) of the arm "251s pivotally connected to the rear end of'a, linkll; the, forw'ard end of which is connected with the front wheel structure; (not shown) of the plow whereby the front and rear ends are adjusted atthe same time, as will bereferred all to morespecifically below. If desired, the collar vMandarm 25 maybe fixed to the crank axle H by; means; permitting lateraladjustment, Where- 'bythe lateralposition of the crank axle -ll as shaft 32' i's journaled for rotation within the V "sleeve3l andat its' -inner endis' formed with which disk furrow openers 1 arerotatably mountub carries an m 35 which is connected by placement in a trunnion member 42 pivoted to the upper ends of a pair of anchoring brackets 48 which are rigidly connected at their lower.

ends to the bracket 39. Thus, by turning the rod 45 in one direction orfthe other, the screw threaded member 42 is rotated'whichruns'the' swivel nut 4| rearwardly or forwardly and thus swings the bell crank 31 and-. raises the -pointof anchorage of the link 36 with the-frame l.

The laterally outer end of the sleeve 3| isadapted' to .receivea land wheel (not shown)., and the land wheel is .adapted. to actuate .a .tractiondriven half-revolutionv clutch which. is .indicated by the reference numerall. .Therclutchjllis of conventional construction and home has been shown only fragmentarily, the clutch includin a driven part 52 and suitable mechanism (not shown) which, under the control. of, a trip lever 53 pivotally mounted onan extension 54 of the crank axle II, is adapted Optionally ,to. connect the driven'part 52. with theaxleshaft 3.2, whereby the arm may be. swung throughapproximately a half revolution, Figure l shows the clutch arm 35 in one positionwhileFigure 2 shows the same inits other position.- r

A transverse bearing sleeve filis fixed, as by welding, to the forward or swinging end of the othencranksection l2 and receives an axle shaft 62 which is of particular formation. The axle shaft 62 includesa horizontal section 63 and a to downwardly bent section the latter rotatably receiving a furrow whe815l Anarm BIis fixed to the landward end of the axle shaft li2 and has its outer end bifurcated to receive the forward end of a link 68, the latterbeing pivotally con-3,5

nected to the end of .thearm 61 by a pivot pin 69. The upper end of the G8 is pivotally connected, as at II, to a fore and aft or longitudinally shiftableadjustingmember 13, which has a threaded section passing through an opening in the plate member 15, withlock nuts on opposite sides of the plate member whereby the adjusting bolt 13 may be securely held in position. "Preferably, the plate I5 is also provided with a short sleeve or bushing 18 to provide a passage for the adjusting bolt 13.

It will be noted that the link 68 is'substantially parallel with the right'hand crank axle l2 and of substantially the sameefiective length, that is, the distance betweenthe points 69 and H is substantially the same as the distance between the axis of the intermediate crank axle section l4 and the axis of the sleeve 6|, andlines connecting these points are parallel. Therefore, when the'crank axle ll isrocked from the position shown in Figure 1 to the position shown in Figure 2, and in the other'direction as well, the link 68 serves to rockthe axle or shaft 62 in the sleeve Bl asthe crank axle- I2 rocks, the

eifectbeing to maintain the angled section 64810 and the plane of the wheel -65 substantially in a given angular position, it beingunderstood that normally the wheel 65 ,is inclined or tilted laterally outwardly at the :top and that it is arthe ground in a line which makes a small angle, to the right or furrowwardly, with respect to the line of advance. Angling the wheel in this manner is commonly referred to giving the wheel more or less lead, generally toward the plowed ground. In Figure 1 the broken line A indicates the line of advance and the broken line B indicates the intersection of the plane of the wheel .65 with the ground; the angle of lead is shown at a. Thus, the parts l2 and 68 serve as generally parallel link means connecting the wheel axle 63 and the plow frame so that whenever the crank axle II is swung, as into different operating positions or from an operating position into a transport position (Figure 2 to Figure l), the angle of inclination of the wheel 65 is not varied, and also, since the angle of inclination of the wheel-B5 is not varied it is likewise true that the angle of lead of the wheel 65 is not varied. However, if it should be desired to adjust the angle of lead of the wheel 65, all that it is necessary to do is to loosen the lock nuts 16 and adjust the pivot bolt 13 either forwardly or rearwardly to cause the plane of the wheel 65 to make a different horizontal angle with respect to the longitudinal axis of the implement.

tially constant. It will be understood that the depth of plowing is normally adjusted by turning the rod 45 to raise or lower the link 36, the operating position of the implement being shown in Figure 2.

A modified form of the present invention, more particularly adapted for the heavier plows, is illustrated in Figures 3 et seq. In this form of the invention the plow frame, indicated by the reference numeral 8|, includes two angle members 82 and 83 arranged back to back and spaced apart to receive a plurality of disk standards 84 The flanges of the angle irons 82 and 83 are apertured to receive attaching bolts 86 and 81, the latter being a l'ong'bolt extending between the angles and servinga's a pivot to connect the rear ends'of the angles to the rear frame 89. The frame 89 includes a pair of rearwardly divergent angles 9! and 92 connected together at their forwardends by a plate 93 that is welded to the angles SI and 92 The plate 93 is providedwith an opening receiving the bolt 81, and slots are also formed in the plate 93 to receive the bolts 86 which, when loosened, permit the frame BI to be angled or" shifted laterally about the pivot bolt 8'! relative to the rear frame 89.

end, as at IOI, so as toprovide a section that extends parallel to the rear end of the other bar 9|, the cross bar 99 being welded to the bar 92 just rearward of the bent portion thereof, as best shown in Figure 5.

The rear frame 89 carries a single piece crank axle indicated in its entirety by the reference numeral I05, the crank axle including a land ranged so that the plane of the wheel intersectsdlSLwheel crank section I96 and a furrow wheel crank section I01; A casting I08 including a sleeve section I09 is secured to the forward end ofthe land wheel crank axle section I06; and associated with the member I08 isa half-revolution clutch unit III of conventional construction, controlled by a triplever H2 and receiving power from atraction land wheel II3. By means of the half revolution clutch unit II I, the land wheel H3 serves to drive a shaft 4 on the inner end of whichv is a crank arm H5. The outer end of the latter is connected by a link Ill with an arm H8, and the arm H8 is connected with a sleeve II9 that is mounted on the intermediate portion I2l of the crank axle I and extends through a left-hand bearing unit I22 suitably connected with the rear end of the angle 92. The other end of the sleeve II'9 has secured thereto an arm I25 to the upper end of which an adjusting crank screw unitI26 is connected.

The particular details of the adjusting screw unit I26 will be referred to below The intermediate portion I2I of thecrank axle 055 is rockably received in a bearing unit I30 carried at the rear end of the angle 9|, the hearing unit comprising two parts I3I and I32 as best shown in. Figure 6. Bolts I33 serve to hold the two sections together and also connect both of them to the rear end of the angle 9 I.

:Secur'ed' to the lower or forward end of the right hand crank axle section 101' is a sleeve casting I31, the sleeve section proper being indicated at 138 and receiving a shaft I39 having a downwardly and. rearwardly bent section I4I on which the rear furrow wheel I42 is journaled for rotation. Secured to the other end of the shaft I39 is an arm I44 carrying a pivot pin I45 by which a link M6 is connected to the arm I44. The link I46 extends generally upwardly. and rearwardly and at its upper end is apertured to receive a pivot pin I48 which passes through the eye of a generally fore and aft or longitudinally shiftable eyebolt I49. As best shown in Figure 6, theeeyebolt I49 extends at an angle through the upper half I3I of the bearing unit I30, the angle being such that, when the plow isin operating position with. the crank section- I0'I almost but not quite horizontal, fore and aft movement of the eyebolt M9 is efiective to rock the shaft I39 in order to adjust: the lead of the furrow wheel I42. A pair of lock nuts HI and I52 serve to adjustably fix the eyebolt I49 in po- .sition. .A collar I56 is secured, as by welding,

to the crank axle at one side of the bearing unit I30, and at the other side thereof an arm I5! is welded to the crank axle and extends generally upwardly. The upper end ofthe arm I51 is apertured and receives a pivot bolt I6I by which the rear end of the link I62 is connected therewith. Thelink I62 extends generally forwardly of the plow and is connected with the front Wheel struc- I'II is threaded for the greater part of its entire length and; extends into a rotatable housing indicated in its entirety by the reference numeral- Il'5. The rotatable housing I15 comprises a rear sleeve section having a nut-receiving chamber Ill and a socket at the rear end. The socket receives a sleeve I19 which is disposed about the bolt Ill and is held in place in the socket by a. short bolt '15 cap section vI-III threaded interiorly so as to be screwed onto the front end of the rear housing section. The two sections of the housing I1 5 are held against relative displacement by abolt or the like. The two housing sections are provided with a pair of shoulders spaced apart so as to receive therebetween a swivel member I09 having a pair of oppositely arranged trunnions' pivotally mounted in a pair of bracket members 205 bolted, as at 206, to an upstanding lugv 201 secured as by welding to the angle member 92. The attaching loop portion I92 of the cap section I-9I receives an eye 209 that is bolted to the rear end of a rotatable adjusting rod 2 theforward end of which is supported on the plow frame in a position to beaccessible to the operator on the tractor by which the plow is propelled. i

As will be apparent from Figure 4,.the swivel I99 is held by the trunnions 20I against'rotation butaccommodates the rotation of the housing I15. The eyebolt ITI is held against rotation by virtue of its connection through the pivot pin. I12 with the arml25. Therefore, whenever thead- 'justing rod209 is rotated, the housing I15 including the: nut member therein, is rotated and thus retracts or extends the eyebolt I'I'Ixrelative thereto in a generally longitudinal direction,

' whereby the sleeve H9 and the arm He may be pivoted in one directionor: the other, thus rais-' of. By pulling forward on a cable connected to the trip lever II2,- the half-revolution clutch mechanism may be actuated to rotate the arm '5, thusswinging the crank axle between its operating and its transport positions. During such swinging movement of the crank axle, both for changing the depth of penetration and for raising or lowering the plow into or outof its transport position, the link I46 and associated parts serve to maintain the anglev and lead of the rear furrow wheel I42, which, particularly referring to the lead of the wheel I42, may readily be adjusted by the bolt I49 and the lock nuts I52. It

will be noted, particularly from Figure 3, that when the plow is in its transport position the link I46 is in a position. substantially at right angles to the axis of the bolt I49. However, when the plow is in its. operating position (Figure 6) the bolt and link are substantially in straight line relation. The result .of this particular arrangement is this: The lead of the furrow wheel I42 may be: varied as soil conditions require by shifting the: bolt I49 in one direction or the other, increasing .thelead. when the ground is hard and reducing the lead when the ground is soft. However, when the plow is raised into its transport position all of the lead should be taken out-of the wheel so that, in effect, it runs parallel to the land wheel II3'. Thev points of connection of the: link I46 with the bolt and the arm I44 and the angular disposition of the other parts are such 7 ithatwhen the plow is raised into its transport positionthe lead of the wheel I42 is zero, regard-less of the particular position of adjustment of the bolt I49. In other words, regardless of the amount of lead irrthe wheel. 1 42 when the plow is in operatin position, when the plow is raised the 'means may be employed in the practice tion generally parallel with rear axle section. v

o 1 6; Ina plow, a supprt,a crank axle pivotally connected with said: support andshaving a genlead of the wheel I42 returns to zero. This Ibelieve to be'broadly new. V i

While I have shown and described above the preferred structure in which the principles of the present invention have been incorporated,- it is to be understood that my invention is not to be and means for shifting one of said links to adjust at leastxone of said angles.

2. In a plow, a plow-carrying structure, a fur- .row wheel therefor, a crank axle connected with 'said plow-carrying structure for swinging move- "ment to carry'theswinging end generally toward and away from said'structure, a part connected with the swinging :end of said crank axle and rockable about a transverse axis relative thereto,

said part including an outwardly and downwardly angled section upon which saidfurrow wheel is journaled, andmeans for rocking said part relative to said crank axle, I

3, In a plow, a plow-carrying structure, a furrow wheel therefor, acrank axle connected with said plow-carrying structure for swinging movement to carry the swinging end generally toward and away'from said structure, a part connected with the swinging end of crank axle and rockable' about a transverse axis relative thereto, said part including an-outwardly and downwardly angled section upon which said furrow wheel is journaled, and means for rocking saidpart relative to said crank axle as the latter. is swung relativeto saidstructure so as to maintain the horizontal angle of said furrow wheel substantially constant.

4. In a plow,- a plow-carrying structure, a furrow wheel therefona crank axle connected with saidv plow-carrying structure for, swinging movement to carry the swinging end generallytoward and away .from said structure, a part connected with the swinging end of said crank axle and rockable about a transverse axis relative thereto, said part including an outwardly and downwardly angled section upon which said furrow. wheel is journaled, and means for rocking said partrelative to said crank axle when the latter is in a stationary position so as to adjust the horizontal angle of said furrow wheel. .7

5; In a plow,.a support, a single U-shaped rear axle pivotally connected at its intermediate section with said support and having, generally downwardlyand forwardly extending crank sections, a land wheel journaled on oneof said sections, a transverse bearing sleeve fixed to the other section, an axle having a downwardly angled part and a transversepart, the latter being rockably disposed in said bearing sleeve, an

arm fixed to I the inner end of said transverse axle part, a furrow wheel journaled on the downwardly angled part of said axle, and a linkpivoted to said arm and to said support in a posirespect to said other latter being rockably disposed in said bearing sleeve, an arm fixed to the'inner end of said transverse axle part, a furrow wheel journaled on the downwardly angled part of said axle, and a link pivoted to said arm and to said support in a position generally parallel with respect to said downwardly and forwardly extending section;

'7. In a disk plow, a rear end construction comprising a swingable crank axle, a furrow wheel carried thereby and swingable therewith between working and transport positions, and means for reducing the amount of lead of said wheel as said wheel and crank axle are swung into their transport position.

8. In a disk plow, a rear end construction comprising a swingable crank axle, a furrow wheel carried thereby and swingable therewith between working and transport positions, means for adjustin the lead of said wheel when the latter and said crank axle are in operating position,

and means for reducing the lead of said wheel substantially to zero as said wheel and axle are swung substantially into their transport position.

9. An agricultural implement comprising a support, an axle shaft member connected therewith and comprising angularly related sections,

bearing means receiving said axle shaft member and receiving one of said sections, a wheel journaledon the other axle section, and means for rotating said axle shaft member. to change the angle of said wheel. 1 r

10. An implement as defined in claim 9, further characterized by a member pivoted to said support for connecting said axle shaft member thereto, and said axle rotating means comprising a link disposed generally parallel with said pivoted member.

.11. A rear end construction for plows and the like, comprising frame means, a single piece crank axle having a land wheel section and a furrow wheel section, means rockably connecting the intermediate portion of said crank axle with said frame means, a land wheel journaled on said land wheel section of said crank axle, a furrow wheel, a movable art connecting said furrow wheel with the furrow wheel section of said crank axle and disposing said furrow wheel substantially in a given angular position when the crank axle is in one position, and means operative when said crank axle moves relative to said frame means for varying the position of said part relative to said furrow wheel section of the crank axle.

12. In a plow, a support, a crank axleswingably connected therewith and having a generally downwardly and forwardly extending section, a furrow wheel axle mounted on said section for rocking movement about a generally transverse axis, a furrow wheel journaled on said furrow wheel shaft and disposed in a given angular position, an arm on said shaft, and a link connected between said support and said arm wh'ereby during swinging movement of said crank axle said link acts through said arm and shaft to maintain said wheel in said given angular position.

13. The invention set forth in claim 12, further characterized by means acting through said link for changing the angular position of said wheel.

14. Theinvention set forth in claim 12, further characterized by said crank axle being swingable between operating and. transport positions, and

' said frame means including a rockable sleeve disposed about said crank axle and receiving a portion of said frame, a; land wheel journaled on said land wheel section of said crank axle, a first arm fixed to said sleeve at one side of said frame portion, a second arm fixed to said sleeve at the other side of said frame portion, mean connecting said second arm with said crank axle, a furrow wheel, a movable part connecting said furrow wheel with the furrow wheel section of said crank axle and disposing said furrow wheel substantially in a given angula position when the crank axle is in one position, adjusting means acting between said frame means and said first arm for adjusting said crank axle and both of said land and furrow wheels, and means operative when said crank axle moves relative to said frame means for varying the position of said movable part relative to said furrow wheel section of the crank axle.

CARL G. STRANDLUND. 

